Question

Resolva a expressão numérica abaixo

Answer 1

Explicação passo-a-passo:

[ 3/4 . (2 : 4/5 - 1/5)] : 138/80

[ 3/4 . (2 × 5/4 - 1/5)] : 138/80=

[ 3/4 . ( 10/4 - 1/5)] : 138/80=

[ 3/4 . ( 50 - 4/20)] : 138/80=

[ 3/4 . (46/20)] : 138/80=

[ 3/4 . 23/10] : 138/80=

[ 69/40] : 138/80=

69/40 × 80/138=

5520/ 5520=

1